D

Data Path

The software used by the application to read and write data to a medium. This is made up of a device driver and a small interface layer.

Deallocate

Return media to the Available state after it has been used by an application.

Decommissioned state

Media that have reached their allocation maximum.

differential inventory

slots which transitioned from empty to full slots are classified

Drive

A device used to write and read physical media. Drives can be in a library unit or stand-alone drives (directly accessible by the user).